What Is This Thing In The Basement? Telephone? Doorbell? - Electrical - DIY Chatroom Home Improvement Forum

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Old 06-30-2012, 04:40 PM   #1
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What is this thing in the basement? telephone? doorbell?


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Old 06-30-2012, 10:57 PM   #2
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I believe its an old lightning arrestor for your phone line.


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Old 07-01-2012, 09:03 AM   #3
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That is correct. Those are the old carbon elements used on phone lines.

You can also see that it has been disconnected. So, it can be deemed abandoned.

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Old 07-01-2012, 09:35 AM   #4
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There are people that collect this old gear. Just throw into your parts box, or hang by the work bench. Great conversation starter.
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Old 07-01-2012, 10:23 AM   #5
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In telephone lingo, it is called a protector. The long red devices are fuses which are overcurrent devices. Under the black screw on cap are carbon & porcelain blocks that prove an air gap to ground that provides over voltage protection. These devices in a more modern form are still used by wire line telephone providers today; they are located in a box called a NID (network interface device).
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